Island



(No Model.)

B. S. MEADER. BOLT HBADING MACHINE.

No. 438,483. Patented Aug. 5, 189(0.

Illlu M III @NVENTDH UNITED STATES PATENT OFFICE.

BENJAMIN S. MEADERJOF PAVVTUCKET, RHODE ISLAND, ASSIGNOR TO THEPAIVTUOKET MANUFACTURING COMPANY, OF SAME PLACE.

BOLT-HEADI NG MACHINE.

SPECIFICATION forming part of Letters Patent No. 433,483, dated August5, 1890.

Application filed March 26,1890. Serial No. 345,413. (No model.)

To all whom it may concern.-

Be it known that I, BENJAMIN S. MEADER, of the city of Pawtucket, in thecounty of Providence, in the State of Rhode Island, have invented a newand useful Improvement in Bolt-Heading Machines; and I do hereby declarethe following to bea specification thereof, reference being had to theaccompanying drawings.

Like letters indicate like parts.

Figure 1 is a front elevation of my invention. Fig. 2 is a sideelevation of the same. Fig. 3 is a iront elevation of a portion of abolt-heading machine to show the location and use of my improvement.Fig. A is a vertical section on the line :1; 0c of Fig. 3, with thehammers and levers in side elevation.

My invention is applicable to machines for heading bolts, and has forits object the protect-ion of the lower slide, whichcarries a hammer,from wear by water and scale in the operation of forging the bolt-head.

It consists of a trough having its upper surface convex, and furnishedwith longitudinal upwardly-projecting lips on its front and rear anddownwardly-projectingears, by which it is fastened to the slide, ashereinafter fully specified.

In the drawings, A A represents the crosshead of a bolt-heading machine.On each of its four arms it has a groove, in which, respectively, aslide B is movable by alever C. The slides B have lugs a, which eachhave a screw-threaded hole, within which a screwthreaded rod 1) isadjustable. The rods l) are thus each adjustable to have a hearing atthe inner end against the hammer or forging-die D. The dies D are eachadjustably secured to the slide B by a screw-bolt c. A

heading die orhammerE is movable reciprocatingly in a direction at aright angle to thecross-head from rear to front and back again.

F is the usual tubular bushing or guard.

A metallic trough G is bent in the form' seen in Fig. 1, having itsconvex side up. It has in front downwardly-projecting ears m, andlongitudinally on its front and rear edge upwardly-projecting lips n. Itis fastened by screws or otherwise upon the upper surface of the lowerslide B, which is properly shaped to receive it, and the cross-head iscut away in this vicinity to give space for the movement of the slide13, so provided with the trough G. The cross-head should be cutaway toleave a sloping surface s on each side.

In forming bolt-heads the bolt-blank is headed to a forging heat and isplaced in the machine and there held by jaws (not shown) 50 to receivethe hammering of the dies D E. I11 order to keep the dies cool and toprevent their injury by contact with the heated blank, jets of Water aredischarged upon them. The hammered surfaces of the bolt-head scale inforging, and these thin scales, mixing and carried away by the water,would work into the grooves if not prevented bya suitable device, andthere form a grit, which would rapidly wear away the grooves and theslides which move therein.

The purpose of my invention is the protection of the lower slide in itsgroove. This I accomplish by means of my trough G, which extends overthe top of said slide in front and on each side. The Water falling fromabove is carried to either side by the convexity of the surface of thetrough, and cannot flow either to the front or rear, because preventedby the lips m. It drips from So the trough G upon the downwardly-slopingsurfaces 8 of the cross-head to the floor. In this manner the grit andwater arekept from the groove in which said lower slide travels.

It will be seen by Fig. 4 that the circular bushing or guard F, whichtakes and conducts away the water and scale from the die E, projectsforward from the cross-head a sufficient distance to discharge its dripinto the trough G.

Instead of making the trough G in a separate piece, it can be cast inone piece with the slide I), in which case the groove should be made ofdetachable cheek-pieces, which can be removed for the proper insertionof 5 the slide in the groove.

I claim as a novel and useful invention, and desire to secure by LettersPatent In a bolt-heading machine, the trough G herein described,incombination with a ham- 10o mer-slide B and a grooved cross-head,substantially as shown.

BENJAMIN S. MEADER.

WVitnesses:

GEORGE H. WEBB, ALFRED J. WEBB.

